Swiss tennis star Roger Federer probably wasn't expecting to give up this kind of point in an exhibition match against Grigor Dimitrov at the BNP Paribas Showdown in New York.

A young boy was invited onto the court and took the opportunity to grab Dimitrov's racket. What followed was a brief rally where he stole a point from Federer. 

The 33-year-old was fooled by a well-timed shot and a boy got one of the most memorable experiences of his life. 

All in good fun.